我有一個要求,列出藍牙上的所有可用設備,並從android設備共享任何文件到選定的設備。我試圖用下面的代碼Android通過藍牙共享文件
private void sharefile(String deviceAddress,String filePath){
File f = new File(filePath);
BluetoothAdapter objBluetoothAdapter = BluetoothAdapter
.getDefaultAdapter();
BluetoothDevice device = objBluetoothAdapter
.getRemoteDevice(deviceAddress);
Log.v("Device", "" + device.getName());
final UUID uuid = UUID
.fromString("00001101-0000-1000-8000-00805F9B34FB");
try {
byte[] buffer = new byte[(int) f.length()];
FileInputStream fis = new FileInputStream(f);
BufferedInputStream bis = new BufferedInputStream(fis);
bis.read(buffer, 0, (int) f.length());
BluetoothSocket socket = device
.createRfcommSocketToServiceRecord(uuid);
OutputStream os = socket.getOutputStream();
os.write(buffer, 0, buffer.length);
os.flush();
os.close();
socket.close();
} catch (SecurityException e) {
e.printStackTrace();
} catch (IllegalArgumentException e) {
e.printStackTrace();
} catch (IOException e) {
e.printStackTrace();
}
}
在執行上面的代碼示出了交通運輸端點未連接上的logcat消息。
06-11 18:26:49.960:W/System.err(9812):java.io.IOException:傳輸端點未連接 06-11 18:26:49.960:W/System.err( 9812):at android.bluetooth.BluetoothSocket.writeNative(Native Method) 06-11 18:26:49.960:W/System.err(9812):在android.bluetooth.BluetoothSocket.write(BluetoothSocket.java:346) 06-11 18:26:49.960:W/System.err(9812):在android.bluetooth.BluetoothOutputStream.write(BluetoothOutputStream.java:85) 06-11 18:26:49.960:W/System.err(9812 ):at com.cit.bt.ShareMessageActivity.connectDevice(ShareMessageActivity.java:138) 06-11 18:26:49.960:W/System.err(9812):at com.cit.bt.ShareMessageActivity.shareFile(ShareMessageActivity .java:83) 06-11 18:26:49.960:W/System.err(9812):at com.cit.bt.ShareMessageActivity.onListItemClick(ShareMessageActivity.java:73) 06-11 18:26:49.960:W/System。 err(9812):at android.app.ListActivity $ 2.onItemClick(ListActivity.java:319) 06-11 18:26:49.960:W/System.err(9812):at android.widget.AdapterView.performItemClick(AdapterView .java:284) 06-11 18:26:49.960:W/System.err(9812):at android.widget.ListView.performItemClick(ListView.java:3736) 06-11 18:26:49.960:W /System.err(9812): at android.widget.AbsListView $ PerformClick.run(AbsListView.java:1974) 06-11 18:26:49.960:W/System.err(9812):at android.os.Handler .handleCallback(Handler.java:587) 06-11 18:26:49.960:W/System.err(9812):at android.os.Handler.dispatchMessage(Handler.java:92) 06-11 18:26 :4 9.960:W/System.err(9812):at android.os.Looper.loop(Looper.java:130) 06-11 18:26:49.960:W/System.err(9812):at android.app。 ActivityThread.main(ActivityThread.java:3687) 06-11 18:26:49.960:W/System.err(9812):at java.lang.reflect.Method.invokeNative(Native Method) 06-11 18:26 :49.960:W/System.err(9812):at java.lang.reflect.Method.invoke(Method.java:507) 06-11 18:26:49.960:W/System.err(9812):at com .android.internal.os.ZygoteInit $ MethodAndArgsCaller.run(ZygoteInit.java:867) 06-11 18:26:49.960:W/System.err(9812):at com.android.internal.os.ZygoteInit.main (ZygoteInit.java:625) 06-11 18:26:49.960:W/System.err(9812):at dalvik.system.NativeStart.main(Native Method)
並試圖使用下面的替代代碼來連接設備,它連接設備但未能傳輸文件。
BluetoothDevice hxm = BluetoothAdapter.getDefaultAdapter()
.getRemoteDevice(deviceAddress);
Method m;
m = hxm.getClass().getMethod("createRfcommSocket",
new Class[] { int.class });
BluetoothSocket socket = (BluetoothSocket) m.invoke(hxm,
Integer.valueOf(1));
socket.connect();
我也在android manifest中提供了必要的權限,但它沒有連接。 任何人都可以幫助我解決這個問題。
你能給我提供Android市場中藍牙文件傳輸背後的邏輯嗎?
謝謝!
謝謝您的回答...我不希望像客戶端 - 服務器模塊兩個設備上安裝應用程序。你能否提供我樣本來檢測附近的藍牙設備和共享文件。沒有客戶端 - 服務器模塊。就像從Android市場轉移藍牙文件一樣。 –
你把藍牙設備與android設備配對了嗎? – Proxy32
是的。對不起,我不記得一切如何發生。我知道我提供的代碼與BlueTooth HeartRate監視器設備連接。 –